Abstract:Using synthetic phospholipid DPPC and cholesterol as membrane materials, the rosemary essential oil (REO) temperature-sensitive liposomes (t-L) were prepared by ether injection method, The temperature-sensitive liposomes were added to the chitosan-pululan solution, and BOPP was used as the base membrane to prepare an antioxidant composite membrane. The encapsulation efficiency, particle size distribution, PDI dispersion coefficient, phase transition temperature and atomic force microscopy of rosemary temperature-sensitive liposomes were measured. Measure the release rate of essential oil in the film to verify the temperature response characteristics of the film. The results showed that the average encapsulation efficiency of the prepared temperature-sensitive liposomes was 65.6%, the average particle size was 164.8nm, the average polydispersity index (PDI) was 0.163, and the switching temperature was 38.5℃ and 41.8℃. The anti-oxidant composite film released 94.1% in 7 days at 42℃, it has a significant temperature response control release effect.